18 J. L. LECONTB. M. D. 



I.YC'US FmI.i-. 



Beak long, maxillary palpi with last joint longer than wide, rounded 

 on inner side ; antennae eomj>ressed, .serrate, second joint short, third 

 as long as the two following. Prothorax carinate near the apex, then 

 channeled, forming a narrow areolet, sides broadly reflexed, without 

 ridges. Elytra with four fine costge, interspaces transversely rugose, 

 sides very broadly dilated, especially in % . 



. Scarlet-red, i)])ieal one-fourth of elytra, head, auteiiiiie, tarsi and tibise, (except 

 on inner edge), ))lack; % seventh ventral deeply and broadly emarginate, eighth 

 spatliiform, flattened at base and faintly bisnlcate; tibise feebly curved, trochanters 



triangular, not acute. Length 8.5-13 mm. L. Cala. ; Ariz crueiitus Lee. 



The specimens from Arizona are much more broadly dilated on the 

 sides of the elytra than those from Lower California, but are probably 

 not s])ecifically distinct. 



I.YCOSTOMUS IMotsch. 

 Characters as in Lt/cm^, except that the last joint of the maxillary 

 palpi is truncate at tip ; prothorax less carinate in front, and less 

 channeled behind ; elytra less dilated on the sides, rather finely reticulate 

 between the costae ; third joint of antennae scarcely longer than fourth. 

 None of these dififerences seem to me of generic value. 



Black, ])rotli(irax at ajiex and side?;, and sides nf elytra as far as the middle 

 fulvous; [)r<>tliiirax with tlic sides liattened and broadly reflexed, apex oldique 

 each side, obtusely angulated at the middle: linely carinate jn' front, feebly 

 channeled behind. Elytra with suture, margin and four costae elevated, the third 

 abhreviated a't each end, feeble and sometimes obsolete, inters23aces finely reticulate 

 with a slight tendency here and there to form double rows; sides slightly and 

 suddenly dilated: trochanters witli lower angle sharp: % seventh ventral deeply 

 semicircularly emarginate, eighth smooth, prolonged narrow, rounded at tip; last 

 dorsal modei'ately prolonged: middle and lunif'tiDir^ strongly curved. Length 



S— 10 mm. Pa.; Oa.: Tex .-. ..lateralis Mels. 



((. — Elytra ftilvous from base for two-thirds the length, suture hlack; Fla. 



Black, sides of prothorax, and of fiftli and sixth ventral segments, elytra and 

 seventli and eighth ventral segments, pale red ; prothorax less carinate in front, 

 more hroadly channeled behind; elytra similarly but more strongly sculptured 

 with the reticulations in regular rows; scutel black, truncate behind; middle and 

 hind tibia; less curved; 9- Length 1.3 mm. Col.; Dr. Horn, one specimen. 



Tiilvellus n. sp. 



The third joint of the antenntc is comparatively longer, and the 

 following joints shorter than in L. lateralis. 



RHYNCHEROiJi n. g. 



Lijcus samjidnipennis Say, differs so much from all the other Eros- 

 like .forms in having a distinct beak and tubular prothoracic spiracles, 

 that I have been compelled to separate it as a distinct genus. The head 

 is prolonged into a broad beak, a,>< long :us wide and narrowed in front ; 



